Introductory Algebra for College Students (7th Edition)

by
Blitzer, Robert F.

Answer

$2r+4$

Work Step by Step

RECALL
The distributive property states that for any real numbers a, b, and c:
$a(b+c) = ab + ac$
Use the distributive property by multiplying $\frac{1}{3}$ to each term of the binomial factor to obtain:
$=\frac{1}{3}(12) + \frac{1}{3}(6r)
\\=4 + 2r
\\=2r+4$